Lease Extension Calculator

Enter the details of your flat below to find out how much it would cost to extend your lease.

For leases under 80 years, we include marriage value.

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Last Updated: 2 March 2021

Our lease extension calculator is kept up-to-date with leasehold case law to ensure it is as accurate as a calculator can be - although we would not recommend using these figures on a Section 42 Notice and they are not a substitute for our valuation advice!

A recent update was based on the Deritend decision which favoured the use of an average of the Gerald Eve and Savills Unenfranchisable graphs.

We will soon update it to include rising ground rent.